I remember in previous version of Premiere, I used to be able to start a Dip to White transition at the 50 percent mark, so that it would start immediately at white, and then dissolve back into the footage. Is seems that now this option is missing. Is there a way to make it work (And I don't mean a workaround like making a white color matte and then adding a cross dissolve)? This feature was useful for other transition types as well- When you don't need the whole transition, but just need the first or last half of it.

Yea...I came here with the same question. I could swear i was JUST using this a couple of weeks ago. As I'm pretty new to Adobe I have no idea how to do this seemingly simple workaround. In my head I was like if only I could make an all white frame and transition from there. Except now I have to learn how to make an all white frame.

If that's the case why (visible in the screen grab) of the 3 dips to black I have added to the end of clips in V2, V3 and V4 does the dip on V4 still have the 'end at 50%' functionality? The others don't. Baffling. Yes, this is CC18.